x2+62x+8x^2+62x+8x2+62x+8
5−8cosx=3+5 sin2x5-8\cos x=3+5\:\sin^2x5−8cosx=3+5sin2x
(12x−2y)3\left(\frac{1}{2}x-2y\right)^3(21x−2y)3
(23x3−8)2\left(\frac{2}{3}x^3-8\right)^2(32x3−8)2
x2−2x−20x^2-2x-20x2−2x−20
2x2+2x+6=302x^2+2x+6=302x2+2x+6=30
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